Fear is something that you are born with. You can't ______yourself of it completely but you can ____

certain fears under certain conditions. [ ]

A. break; get rid of    

B. get; overcome  

C. overcome; rid of  

D. rid; overcome

向CH₃COOH  CH₃COO^－+ H⁺ 的平衡体系中，加入下列物质能使醋酸的电离程度和溶液的pH都变大的是

A．NH₄Cl固体

B．CH₃COONa

C．NH₃·H₂O

D．Zn粉